[clang] [clang] callee_type metadata for indirect calls (PR #163233)

[Prabhu Rajasekaran via cfe-commits]

================
@@ -0,0 +1,83 @@
+// Tests that we assign appropriate identifiers to indirect calls and targets.
+
+// RUN: %clang_cc1 -triple x86_64-unknown-linux -fexperimental-call-graph-section \
+// RUN: -emit-llvm -o - %s | FileCheck --check-prefixes=CHECK,ITANIUM %s
+
+// RUN: %clang_cc1 -triple x86_64-pc-windows-msvc -fexperimental-call-graph-section \
+// RUN: -emit-llvm -o - %s | FileCheck --check-prefixes=CHECK,MS %s
+
+// CHECK-DAG: define {{(dso_local)?}} void @foo({{.*}} !type [[F_TVOID:![0-9]+]]
+void foo() {
+}
+
+// CHECK-DAG: define {{(dso_local)?}} void @bar({{.*}} !type [[F_TVOID]]
+void bar() {
+  void (*fp)() = foo;
+  // CHECK: call {{.*}}, !callee_type [[F_TVOID_CT:![0-9]+]]
+  fp();
+}
+
+// CHECK-DAG: define {{(dso_local)?}} i32 @baz({{.*}} !type [[F_TPRIMITIVE:![0-9]+]]
+int baz(char a, float b, double c) {
+  return 1;
+}
+
+// CHECK-DAG: define {{(dso_local)?}} ptr @qux({{.*}} !type [[F_TPTR:![0-9]+]]
+int *qux(char *a, float *b, double *c) {
+  return 0;
+}
+
+// CHECK-DAG: define {{(dso_local)?}} void @corge({{.*}} !type [[F_TVOID]]
+void corge() {
+  int (*fp_baz)(char, float, double) = baz;
+  // CHECK: call i32 {{.*}}, !callee_type [[F_TPRIMITIVE_CT:![0-9]+]]  
+  fp_baz('a', .0f, .0);
+
+  int *(*fp_qux)(char *, float *, double *) = qux;
+  // CHECK: call ptr {{.*}}, !callee_type [[F_TPTR_CT:![0-9]+]]
+  fp_qux(0, 0, 0);
+}
+
+struct st1 {
+  int *(*fp)(char *, float *, double *);
+};
+
+struct st2 {
+  struct st1 m;
+};
+
+// CHECK-DAG: define {{(dso_local)?}} void @stparam({{.*}} !type [[F_TSTRUCT:![0-9]+]]
+void stparam(struct st2 a, struct st2 *b) {}
+
+// CHECK-DAG: define {{(dso_local)?}} void @stf({{.*}} !type [[F_TVOID]]
+void stf() {
+  struct st1 St1;
+  St1.fp = qux;
+  // CHECK: call ptr {{.*}}, !callee_type [[F_TPTR_CT:![0-9]+]]  
+  St1.fp(0, 0, 0);
+
+  struct st2 St2;
+  St2.m.fp = qux;
+  // CHECK: call ptr {{.*}}, !callee_type [[F_TPTR_CT:![0-9]+]]
+  St2.m.fp(0, 0, 0);
+
+  // CHECK: call void {{.*}}, !callee_type [[F_TSTRUCT_CT:![0-9]+]]
+  void (*fp_stparam)(struct st2, struct st2 *) = stparam;
+  fp_stparam(St2, &St2);
+}
+
+// CHECK-DAG: [[F_TVOID_CT]] = !{[[F_TVOID:![0-9]+]]}
+// ITANIUM-DAG: [[F_TVOID]] = !{i64 0, !"_ZTSFvE.generalized"}
+// MS-DAG:  [[F_TVOID]] = !{i64 0, !"?6AX at Z.generalized"}
+
+// CHECK-DAG: [[F_TPRIMITIVE_CT]] = !{[[F_TPRIMITIVE:![0-9]+]]}
+// ITANIUM-DAG: [[F_TPRIMITIVE]] = !{i64 0, !"_ZTSFicfdE.generalized"}
+// MS-DAG:      [[F_TPRIMITIVE]] = !{i64 0, !"?6AHDMN at Z.generalized"}
+
+// CHECK-DAG: [[F_TPTR_CT]] = !{[[F_TPTR:![0-9]+]]}
+// ITANIUM-DAG: [[F_TPTR]] = !{i64 0, !"_ZTSFPiPcPfPdE.generalized"}
+// MS-DAG:      [[F_TPTR]] = !{i64 0, !"?6APEAHPEADPEAMPEAN at Z.generalized"}
+
+// CHECK-DAG: [[F_TSTRUCT_CT]] = !{[[F_TSTRUCT:![0-9]+]]}
+// ITANIUM-DAG: [[F_TSTRUCT]] = !{i64 0, !"_ZTSFv3st2PS_E.generalized"}
+// MS-DAG:      [[F_TSTRUCT]] = !{i64 0, !"?6AXUst2@@PEAU0@@Z.generalized"}
----------------
Prabhuk wrote:

Removed the DAG checks across tests. PTAL.

https://github.com/llvm/llvm-project/pull/163233